cpu.h

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef __SOC_CAVIUM_CN81XX_CPU_H__
#define __SOC_CAVIUM_CN81XX_CPU_H__
 
#include <stdint.h>
#include <symbols.h>
 
/**
 * Number of the Core on which the program is currently running.
 *
 * @return Number of cores
 */
size_t cpu_self_get_core_id(void);
 
/**
 * Return a mask representing this core in a 64bit bitmask
 *
 * @return The mask of active core.
 */
uint64_t cpu_self_get_core_mask(void);
 
/**
 * Return the mask of available cores.
 *
 * @return Mask of available cores
 */
uint64_t cpu_get_available_core_mask(void);
 
/**
 * Return the number of cores available in the chip.
 *
 * @return The number of available cores.
 */
size_t cpu_get_num_available_cores(void);
 
/**
 * Init secondary core and call the provided entry for given core.
 * A stack of size CONFIG_STACK_SIZE is set up for each core in REGION
 * stack_sec. The unique core id is passed to the entry point functions.
 *
 * @return zero on success
 */
size_t start_cpu(size_t cpu, void (*entry_64)(size_t core_id));
 
/**
 * Secondary ASM CPU entry point.
 * For internal use only.
 */
void secondary_init(void);
 
/**
 * Secondary CPU C entry point.
 * For internal use only.
 */
void secondary_cpu_init(size_t core_id);
 
/* Symbols in memlayout.ld */
 
DECLARE_REGION(stack_sec)
 
#endif  /* __SOC_CAVIUM_CN81XX_CPU_H__ */